Improvement in piles for armor-plates



am sata gm im AJOSHUA JnAvoNs, or sIIEErrnLD, ENGLAND.

Letters Patent'No. 110,143, dated December 13, 1870.

' IMPROVEMENT |N PILES FoR ARMOR-PLATES.4

The Schedule referred to lxrthese Letters'Patent and making part of the same.

To all whom lit may concern.-

Be it'known that I, JOSHUA. JEAVONS, of the Atlas Works, Sheffield, in the county of York, England, forge manager, have invented Improvements inthe Manufacture of Armor-Plates and other heavy forms of malleable iron or steel, or of steel and iron combined, of which the following is a specilication.

This invention relates to a peculiar process of manufacturing armor-plates, bars `for fortification "rolled into similar dat bars again.

These bars are repiled and rolled in a plate-mill into .a plate, or what is commonly called small molds. v f

These small 'molds or plates are afterward sheared into a given size, as required.

A- number of these small molds or plates is t'h'en -piled one on the other, and rerolled into a thicker plate, or what is commonly called large molds.

A number of these large molds is then piled one on the other, and rolled into an armor-plate.

This process involves the use of costly plant, and necessitates a great expenditure of time and labor, which is obviatedvl by my improvem nts.

According to my improved process, I produce the piles for the class of articles above referred to by piling between top and bottom dat plates or molds, A andB of the drawings, flat bars with rabbetcd edges, or with what may be termed semi-dovetailed edges, (see Figure 1,) so that the edges shall lap over, or dovetail or lock one ou the other when the said bars are arranged sideby side in the pile.

A modification of this form of pile is represented in Figure 2, where I have represented a plate formed byA piling between top and bottom large molds bars of iron or steel, or both in combination, provided with scarfed edges, and havinga longitudinal channel on the upper and under surface,"or on one of such surfaces only.

Or, Ain lieu ofthe above, I sometimes pile bei l tween the fop and bottom molds bars of iron or steel, or iron and-steel, of a section somewhat similar to what is known as double angle-iron, Figure 3, but with beveled edges, such barsbeing provided with longitudinal channels vand ribs on opposite sides so as to interlock and break joint with similar bars in the nex't layer; or the 'same sectionmay be used without either ribs or channels by having the over lapping sides slightly semi-dovetailed, as shown in Figure 5.

The molds may have channels or ribs in or on their inner surfaces locking into the ribs or channels iu the top and bottom layer and bars; or, in lieu of making channels on one side, and projections on the other of the said bars, I sometimes make rectangular or other shaped channels on one or both sides ofthe bars, and till in the' cavities with ordinary merchant bars of corresponding shape. (See Figure 4.)

The bars of these series on the outer edges of the.

pile are made with one edge vertical in lieu of beveled, such vertical edge being about double the thickness of the innerl edge ofthe said bars, as will be seen on referring to the half-sized sectional detail of the bars represented opposite the corresponding piles in the drawing annexed. l In all these instances, however, the pile consists of rabbeted, dovetailed'bars, with scarfed joints, between top andbottom large molds, with or without projections andhollows for insuringa still further interlocking o f such bars. e

The large molds employed may be of the ordinary construction, but I' prefer to construct them for thispurpose as follows:

I pile ordinary merchant flats or barsof any suitable section, of iron or steel, or steelfand iron in combination, so asto form a box or cavity between the ,top and bottom plates or small molds, which box or cavity I fill with iron or steel, or 4iron and steel scrap, and, after heating the pile, I weld the same into 'a homogeneous mass by rolling or hammering.

The bars, hereinbefore referred to, are arranged or piled either longitudinally and transversely, alternately, or longitudinally or transversely only, or. at

any other angle, as required; but, in all cases",

lthe pile consists of rabbeted, dovetailed bars, with scarfed joints arranged between top and bottom large molds, thus producing the thorough and intimate interlocking of the parts necessary in articles of this class.

Having described my invention, and the manner in which the same is, or may be, carried into eie'ct,

What I claim, and desire to 'secure by Letters Patent,is-

The manufacture of armor-,plates and other heavy forms of malleable iron and steel from .piles composed of layers of rabbeted, dovetailed bars, with scarfed joints, in combinationwith top and bottom large molds, as herein shown and described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JOSHUA JEAVONS,

Barngraee Villa,

Betrug/rave Roa-d, Witnesses:

Sheyeld. WILLIAM HUGHES,

' 148 Gw'mesthlrope Road, Shelicld.

WILLIAM WAPLINe'roN,

Atterclt'fe, Sheelfl. 

